[PWGEM/Dilepton] don't use getProcess == 4 for hb->hc->l decay

[dsekihat]

PWGEM/Dilepton: don't use getProcess == 4 for hb->hc->l decay

[github-actions]

O2 linter results: ❌ 24 errors, ⚠️ 45 warnings, 🔕 0 disabled

[alibuild]

Auto-approving on behalf of @dsekihat.

[alibuild]

Error while checking build/O2Physics/o2 for 44c7879 at 2025-11-07 14:53:

-- The following REQUIRED packages have been found:

 * Arrow
 * Gandiva
 * Vc
 * ROOT (required version >= 6.20.02)
 * fmt
 * nlohmann_json
 * FairLogger
 * FairRoot
 * Microsoft.GSL
   Mainly for its span
 * FairMQ
 * InfoLogger
 * Configuration
 * Monitoring
 * boost_headers (required version == 1.83.0)
 * boost_unit_test_framework (required version == 1.83.0)
 * boost_program_options (required version == 1.83.0)
 * boost_filesystem (required version == 1.83.0)
 * Boost (required version >= 1.56)
 * Common
 * RapidJSON
 * CURL
 * TBB
 * libjalienO2
   For CCDB API
 * LibUV
 * LLVM (required version == 20.1.7)
 * FFTW3f
 * absl
 * O2
 * KFParticle
 * fjcontrib
 * onnxruntime

-- The following OPTIONAL packages have not been found:

 * FlukaVMC
 * AliRoot
   For very specific use cases only
 * Vtune
 * ONNXRuntime::ONNXRuntime
 * ONNXRuntime

-- The following RECOMMENDED packages have not been found:

 * JAliEnROOT

-- Configuring done (14.6s)

Full log here.